With a population density twice that of New York City, you might picture Seoul as an urban jungle packed with tall buildings. While there is no shortage of cityscape, one of the greatest aspects of Seoul is its many parks. From ancient mountain trails to re-claimed industrial land, there are endless places to enjoy the outdoors. Before we arrived, all I could picture were city streets with neon signs and futuristic architecture. Now I realize what I will probably remember most about Seoul is the green space. We have visited many parks here, but this post will be dedicated to two of the largest and most interesting parks we have…